Metal frame for screens and the like



ug. IZ, 1924. 1,504,457'

J. o. WAGNER METAL FRAME FOR SCREENS AND THE LIKE Filed Dec. 29 1916 Patented Aug. 12, 1924.

.Tonno WAGNER, or CHICAGO, ILLINOIS.

METAL FRAME FOR SCREENS AND THE LIKE.

Application filed December 29, 1916. Serial No. 139,554.

To all whom t may concern:

Be it known that I, JoIIN O. citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Metal Frames for Screens and the like, of which the following is a specification. f

This invention relates in general to metallic frames, and more particularly to adjustable metallic frames, and has special reference to frames employed as window screen frames and will be hereinafter so referred to and is so shownv in the drawings but is applicable also for use in frames of door screens, sections of portable houses, flexible signs and the like.

The principal objects of the inventions are to provide a frame of the above named general character which shall be simple and inexpensive in construction, and one so made that its parts may be carried in stock by merchants to the end that the necessary parts or pieces may be selected therefrom and readily assembled into a screen frame of any size to lit window and door frames and the like of different sizes; to provide simple and efficient means for preventing the members of the frame becoming accidentally detached from each other; to provide simple and effective means for temporarily holding` the screen or wire cloth to the frame in such a manner that its tension may be readily adjusted prior to the permanent (releasable.) attachment of the wire cloth to the frame; to provide improved means for supporting the frames; to provide means for enabling` the screen to be made in sections and fitted together to form a single composite screen of large size; to provide means for attaching the screen to the Vwindow or other frame, preferably by means of hinges or the like; to provide a special construction of metallic screen whereby the underlocking corners of the frame will be secured together Vso as to afford great strength and rigidity at those points; together with such other objects as may be disclosed in the sub-joined specilication.

ln attaining the objects referred to together with such additional objects as may hereinafter appear II have provided a construction one embodiment of which is illus- VAGNER, a.

Figure 4 is a section onthe plane 1r-1 of i Figure 1, showing the improved construc` tion of the corners of the frame;

Figure 5 is a perspective view of one end of one member of the frame apart from its cooperating members, illustrating the construction at each corner of the frame;

Figure 6 is a section on the plan 6-6 of Figure 1 showing the device employed for attaching the,l frame to the window frame or the like; I

Figure 7 is a section through an alternative form of fasteningdevice adapted to enable the screen tohinge on its stuaporting frame;

F vigure 7 is a transverse section through anV alternative form of frame; and

Figure 7b is a transverse section through a further form of frame. i

Referring now to Figures 2 and 3 of the drawings it must first be pointed out that the frame member shown in section in these figures is adapted to provide a preliminary locking position for the two members which will enable the tension of the wire screen to be readily adjusted as desired before finally locking the wire screen in place. For this purpose the inner and outer members of the frame, 2O and 21 respectively, are so formed that the outer member 2l is adapted to be held by the inner vmember 2O in one or other of two predetermined positions. The first of these is reached with the edge 22 of the member 21 in contact with the corner 23 of the inner member 20 as shown in Figure 3. The second position is reached when the edge' 22 of the member 21 is in contact with the opposite corner 28 of the inner member 2O as shown in Figure 2. If the outer member 21 is placed with its edge 22 in the corner 23 and pressure is applied to the channeled rib 24 the edge 25 of the member 21 slips over' the projecting ridge 26 on the member 20 so as to bring the central parts of the members and 21 into contact, thereby limiting any further movement of the edge inwardly with respect to the member 20. This movement gives the preliminary locking position shown in Figure 3. So far the member 21 has turned about its edge 22 as a pivot. Further pressure on the part 24 not `being able to produce further pivotal. movement about the edge 22 causes the member 21 to turn about the line of contact 27 between the central portions of the two members. The result of this is to bring; the end 22 of the member 21 out o-f the. corner 23` into the corner 28 of the member 20. This swinging movement about the line 27 allows the edge 25 to slip clear past the inwardly projecting ridge 26 which latter part then enters the groove 29 as shown in Figure 2.- rThis position constitutes the final locking position. of theV frame members.

In orderto prevent the member 21 from becoming readily detached from the member 20. a, longitudinal rib. or projection 3.0 is

preferablyl .arranged on` the member 2O over which the edge 22 of the member 21has to i slide before. the parts can be, disengaged.

In Figures 7 a and 7b alternative forms of construction are illustrated in which.. the inner and outer frame members 60: and 61 respectively have only one locking position, the parts of the frame. being shown inv that position. vWith this form of frameV the outer member 61 is'held in position as. a result of the engagementof the edge 62 with a longitudinal rib or projection 63K (Figure I. 7a) or groove 64 (Figure 7") and the yengagement of the flange 65 with the flange 66 of the inner member 60. Y

An important feature of the invention consists in the manner in which the interlocking members` are united to each other at corners of the frames. The members. of the frameare formed with right-angled extensions1 adapted to overlap. the adjoining members., Preferably, the-extension piece upon oneof these members, and also the parts on lthat member which are overlapped by the extension of the other members, are offset in- .wardlyboth in the plane of the frame and alsoVA transversely thereto in order that a flush joint shall be made atn eachv corner of the frame asillustrated in Figure 1 ofthe drawings.

l/Vhile the main portion of one of the members and the si de wall-s attached thereto can beconveniently offset so that these parts lie f snugly inside the other member as shown in Figure 4,. it isnot convenient to so offset the flanUes/. and .39 so these flanges are referably mitred at the corners as shown in Figtir-e5. .In order to unite the corners of the frame .together the. constructionillustrated. has been provided. This construction comprises the provision of apertures 40 at the ends of the overlapping members adapted to receive a hollow rivet 41 the flange of which is subsequently .riveted over in order to securely fasten the two members of the frame together. A hollow rivet is preferably used instead of a solid rivet to enable a larger area of metal to be gripped than a solid rivet of the same weight. Ihe fact that it is hollow has the further advantage that the necessary turning over of the annular flange or walls of the rivet is accomplished much more easily and readily thany the forming of a rivet head at the end of a solid rivet, as obviously, force may be applied internally on the edges of such a hollow rivet in order to provide the necessary flange. Such internal application of force is impossible in the case of an ordinary rivet.

The parts of the members adjacent the apertures therein are formed so that they lit snugly against each other and on their outer face provide an annulary recess adapted to receive the head and outwardly flanged portion of the rivet respectively. The hollow rivet is preferably arranged with its head externally with respect to the frame m order to prevent the accumulation of dirt in the this part 31 is formed to provide a bearingi and pivotal support for the ends 34 of a wire loop 35. This wire loop 35 is used for lifting the screen and is also adapted to engage with a projecting part on the window frame or other support for the screen if desired and thereby prevent the screen moving outwards.

In this arrangement shown in Figure 7 a hinge 36 is attached to the frame by means of av metal strip 37 shaped so as to [it closely around the part 20. The other members of the4 hinge may be suitably arranged on the supporting frame as shown in Figure 9.

Vhat I claim:

1. A metallic frame comprising in combination cooperating inner and outer members, the inner member being provided with transverse walls at its edges and being adapted to receive the other, said outer member contacting with said inner member at its outer edges and also at a point intermediate its edges, inwardly extending portions on the inner faces of both transverse walls of said inner member,the rotation of said outer member about said intermediate point of Contact bringing both edges of said outer member into locking engagement with said inwardly extending portions.

2. A metallic frame comprising in combination cooperating inner and outer members, one adapted to receive the other, said outer member being adapted to rotate relatively to said inner member, and inwardly extending portions on said inner member about points of Contact on intermediate portions of the members adapted to engage each edge of said outer member and yieldingly resistantly prevent such rotation and hold said members in engagement.

3. In a device of the character described, in combination, inner and outer members, the inner member having an intermediate fulcrum portion, and spaced side walls, one of said walls having a curved abutment, and the other wall being offset and provided with a shoulder, and the outer member being of greater length than the distance between said walls and having a yielding portion adapted to engage said abutmentand an intermediate offset portion adapted to contact with said fulcrum portion to permit said outer member to rock about said fulcrum portion.

4. In a device of the character described, in combination, inner and outer members, the inner member having an intermediate fulcrum portion, and spaced side walls, one of said walls having a curved abutment, and the other wall being offset and provided with a shoulder, said outer member being of greater length than the distance between said wallsl and having a yieldingly resistant Y flange adapted to impinge upon a portion ot flexible material placed between the flange and said abutment, said outer member having cont-act with said fulcrum for angular displacement thereon, and a flange on said outer member adapted to ride over said olfset wall and engage said shoulder for lockin@ the members together.

n testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses.

JOHN O. WAGNER. Witnesses:

PAUL CARPENTER, DONALD C. WILLIAMS. 

